Gree CF01000730 Service Manual Download Page 24

Page: 24 / 129

GREE Duct type split Air conditioner Inverter Series

3) Tick “I accept the terms in the License Agreement” and then click “Next”.

4) Click “Browse” to change the default folder to the expected one, or click “Install” to continue

the installation.

Summary of Contents for CF01000730

Page 1: ...DUCT TYPE SPLIT AIR CONDITIONER INVERTER SERIES T3 GC201904 I Capacity 20kW 40kW Rate Frequency 50 60Hz Operation Range 7 C 52 C...

Page 2: ...Preparation and Notice 55 2 Installation Materials Selection 55 3 Installation of Indoor Unit 58 4 Installation of Outdoor Unit 61 5 Pipeline Design of Refrigerant 64 6 Installation of Drain Pipe 65 7...

Page 3: ...List Model Product List Cooling Capacity Heating Capacity Power Supply Refrigerant Appearance kW kW Outdoor Indoor FGR20Pd DNa X CF01000730 20 22 3N 380 415V 50Hz 60Hz R410a FGR25Pd DNa X CF01000740...

Page 4: ...4 Frequency Conversion System Fixed frequency omitted Frequency conversion Pd 5 Design No Arranged based on A B C D and so on 6 The Number Of Outdoor Units One outdoor unit omitted Two outdoor units...

Page 5: ...ion W D H Outline mm 940 320 1430 940 460 1615 Package mm 1033 433 1580 1033 573 1765 Net Weight Gross Weight kg 120 130 146 162 Connection pipe Outer diameter Liquid Inch mm 3 8 3 8 Gas Inch mm 3 4 7...

Page 6: ...40 HQ set 10 20 22 7 18 18 Note Specifications may be changed due to product improvement Please refer to nameplates of the units Noise data are collected from a semi anechoic room Decibels may be slig...

Page 7: ...ies 5 CONTROL 1 Wired Controller 1 1 Control panel Fig 2 1 Appearance of wired controller Fig 2 2 LED graphics of wired controller Table 2 1 LED display instruction No Symbols Instructions 1 Up and do...

Page 8: ...ing project number of indoor unit it displays NO icon 11 Floor Heating mode When Heating and Floor Heating simultaneously shows up it indicates 3D Heating is activated 12 Display SET icon under parame...

Page 9: ...tatus The indoor unit resumes the original setting state after power failure and then power recovery 35 Invalid operation 36 Current wired controller connects master indoor unit 37 Timer zone Display...

Page 10: ...of wired controller Self tapping Screw ST3 9X25 MA Soleplate of wired controller Q ty 1 3 2 Edition Two Unit mm Fig 2 5 Parts of wired controller No 1 2 3 4 Name Panel of wired controller Self tappin...

Page 11: ...ad it through the hole on the back plate of wired controller 3 Place the wired controller on wall and secure its back plate on wall with screw M4X25 4 Connect the 2 core twisted pair cable to terminal...

Page 12: ...EE Duct type split Air conditioner Inverter Series 10 1 2 3 Removal method Fig 2 7Removal of Wired Controller 1 2 4 Connection of communication cord Fig 2 8 One wired controller controls one indoor un...

Page 13: ...Function 1 ON OFF Turn on or turn off the unit 2 TURBO Set turbo function 3 MODE Set operation mode 4 Set up down swing status 5 I FEEL Set I FEEL function 6 TEMP Switch temperature displaying type o...

Page 14: ...and after sales service and commissioning It can debug units and control units operation status quickly and conveniently It will not only improve the productivity but also reduce the difficulty and c...

Page 15: ...ter Communicaiton board 30118015 This board can be used when units are far from the computer Board connection wire 1m 4001023229 4 core wire connecting units and converter Board connection wire 5 5m 4...

Page 16: ...nverter is under CAN data transferring mode the function LED of CAN to USB will be on 5 When converter is under HBS data transferring mode the function LED of HBS to USB will be on 6 USB interface con...

Page 17: ...ction 3 3 4 Communication cord 3 3 4 1 USB wire Connect USB wire with computer s USB interface at one end and with the USB interface of USB data converter at the other end as indicated below 3 3 4 2 B...

Page 18: ...ctual needs such as the on off temperature fan speed mode etc Meanwhile the software can also set or view the function parameters of outdoor units gateway and other equipment In this way the mangement...

Page 19: ...s Server 2003 SP3 or higher Windows XP SP3 or higher Windows Vista Windows 7 2 CD Playing Make sure you have administrator access to the computer and there is a CD ROM in the computer Put the CD into...

Page 20: ...phics This flowchart describes basically the software installation process See below for details 3 4 1 2 Installation process 1 Install Net Framework 4 0 1 If your computer has installed Net Framework...

Page 21: ...GREE Duct type split Air conditioner Inverter Series 19 2 Extracting files 3 Click and select I have read and accept the license terms Then click Install...

Page 22: ...GREE Duct type split Air conditioner Inverter Series 20 4 Installation is in progress 5 Click Finish to complete the installation...

Page 23: ...ir conditioner Inverter Series 21 2 Install Access Driver 1 Before operating Gree commissioning software please first install Access Driver necessary for versions below OFFICE 2007 Click Install Acces...

Page 24: ...it Air conditioner Inverter Series 22 3 Tick I accept the terms in the License Agreement and then click Next 4 Click Browse to change the default folder to the expected one or click Install to continu...

Page 25: ...es 23 5 Installation is in progress 6 Click Ok to complete the installation 3 Install Gree Debugger 1 Before installing Gree debugger make sure that your computer is installed with Net Framework 4 0 o...

Page 26: ...GREE Duct type split Air conditioner Inverter Series 24 2 Click Next 3 Click Browse to select installation folder If no change is needed for the folder click Next to continue the installation...

Page 27: ...GREE Duct type split Air conditioner Inverter Series 25 4 Click Next 5 Installation is in progress...

Page 28: ...oner Inverter Series 26 6 Click Close to complete the installation 4 Install USB Converter Driver 1 If USB converter driver is already installed in your computer this part can be skipped Otherwise cli...

Page 29: ...GREE Duct type split Air conditioner Inverter Series 27 2 Then the following installation window will be shown 3 This window will exit after installation is finished...

Page 30: ...ata Converter 1 If converter baud rate is needed to be set then converter configuring software must be installed Click Install Gree USB Data Converter 2 Then select the setup language You can choose C...

Page 31: ...Duct type split Air conditioner Inverter Series 29 4 Tick I accept the agreement Then click Next to continue installation 5 Click Browse to select your expected installation folder Click Next to cont...

Page 32: ...Duct type split Air conditioner Inverter Series 30 6 Click Browse to change folder Click Next to continue 7 If you want to create s desktop shortcut tick Creat a desktop icon Then click Next to conti...

Page 33: ...tioner Inverter Series 31 8 Destiniation location folder and additional task will be shown in the next step If you need to change any of it please click Back If not click Install to start installation...

Page 34: ...32 10 Click Finish to complete the installation 3 4 2 Data monitoring 1 Start up Gree Debugger 2 On the original interface user can select language and units system Click OK to confirm the defaulted...

Page 35: ...GREE Duct type split Air conditioner Inverter Series 33 3 Select language 4 Select system of units...

Page 36: ...e to communicate normally with correct COM and protocal then you may click Connect to enter the interface of numbers Otherwise connect in accordance with the connection diagram shown below 6 COM selec...

Page 37: ...tion This is to select the communication method of your units Currently CAN is applicable to the units 8 After the selection click Connnect If units can communicate normally with computer then the int...

Page 38: ...t information and errors can be dragged up and down at the dividing lines As to the display zone of outdoor modules information it can show information of only one module and hide information of other...

Page 39: ...ck to select and view units that need Monitoring 3 4 3 Project debugging 1 Click icon of Debug on the menu bar and the interface will be switched to project debugging where auto debugging will be star...

Page 40: ...s displayed it means user needs to judge whether to continue debugging or not Click icon and relevant information will be shown for your reference Click Close to close the pop up For No 3 Confirm ODU...

Page 41: ...ve problems Click Close to close the pop up 5 During debugging a click on Break can stop debugging Click Start to resume debugging and then debugging will be finished step by step For No 10 ODU Valves...

Page 42: ...DU Settings System Settings Project Number Conflict In case there is project number conflict in indoor units other functions will be shielded Then this parameter needs to be set in order to eliminate...

Page 43: ...all of them or Select Inverted to select none of them After selection the current values of the corresponding parameters will be displayed in the zone of settings Click Set and then click in the pop u...

Page 44: ...GREE Duct type split Air conditioner Inverter Series 42 3 4 5 Other functions 1 Capture screen Click icon of Capture Screen to print the interface If you want to open the interface click Open...

Page 45: ...GREE Duct type split Air conditioner Inverter Series 43 2 Search for database folder Click icon of Open Data Folder on the menu bar to open database folder...

Page 46: ...Display Settings to select High Low Pressure Value and Refrigerant Type Select Temperature and the pressure parameter displayed on the interface will be temperature Select Pressure and the pressure pa...

Page 47: ...ving of multiple systems Click icon of Others on the menu bar and click Database Save Settings to select which system that needs to save database Because there is a large quantity of data in a network...

Page 48: ...ing of database should be set before the software starts monitoring see below interface Click Change database saving path and click Browse to change the saving path Click Rebuild Database to rebuild t...

Page 49: ...t outdoor or indoor units or the mainboard of wired controller according to actual needs 3 HBS CAN and RS485 of the converter can be switched by buttons Press the button SET on the converter to realiz...

Page 50: ...r conditioner Inverter Series 48 Step 1 Right click My Computer on the desktop and click Manage Step 2 In the pop up window select Device Manager in the left column Step 3 Find Port COM and LPT in the...

Page 51: ...type split Air conditioner Inverter Series 49 Step 4 Right click USB Serial Port COM6 and then click Properties The dialog box of properties will then pop up Step 5 Then click Port Settings in the di...

Page 52: ...Duct type split Air conditioner Inverter Series 50 Step 6 Click Advanced and then a new dialog box will pop up Find the Serial Enumerator in the miscellaneous options and cancel the tick Click OK to...

Page 53: ...the baud rate of USB interface automatically Ex factory defaulted baud rate unit bps AC is connected with Baud rate of air conditioner interface Baud rate of USB interface CAN 20000 50000 self adaptiv...

Page 54: ...2 Double click the desktop shortcut 3 Select the needed communication serial port and language in the System Settings 4 Select the function that is to be set and the corresponding baud rate refer to...

Page 55: ...E Duct type split Air conditioner Inverter Series 53 5 If you want to restore ex factory settings click Default to restore the default settings 6 Click Get to get the current setting details of conver...

Page 56: ...GREE Duct type split Air conditioner Inverter Series 54 7 Switchover of Software Languages...

Page 57: ...ccur in the system or even lead to system breakdown Once the unit is energized and turned on for the first time the display tube of outdoor unit displays A0 which indicates debugging standby status At...

Page 58: ...e copper pipe is cleaned and dried the inlet and outlet must be sealed tightly by using pipe caps plugs or adhesive tapes 2 2 Condensate water pipe 1 Pipes that can be used for air conditioner drainag...

Page 59: ...he cores shall be twisted together 3 If unit is installed in places with intense magnetic field or strong interference it is necessary to use shielded wire Communication cable selection for IDU and wi...

Page 60: ...0kW b 40kW Below are dimensions of a b c d e f g h i etc for different models Unit mm Model a b c d e f g h i FGR20Pd DNa X I 1355 632 992 1150 192 326 1315 760 385 FGR25Pd DNa X I 1563 707 992 1350 1...

Page 61: ...Press or button to select parameter code Press MODE button to enter parameter setting At that time parameter value is blinking Press or button to adjust the parameter value and press ENTER CANCEL butt...

Page 62: ...rameter setting At that time parameter value is blinking Press or button to adjust the parameter value and press ENTER CANCEL button to finish setting 4 Press ENTER CANCEL button to return to last ste...

Page 63: ...tion to avoid lacking oxygen 4 Read this manual carefully before installation 4 2 Selection of installation site 1 Select a location which is strong enough to hold unit s weight so that unit can stand...

Page 64: ...oid direct sunlight 6 The rain and condensation water can be drained out smoothly 7 The outdoor unit will not be embedded by the snow and not affected by garbage and oil smog 8 The installation of out...

Page 65: ...and noise will be caused The outdoor unit shall be fixed firmly The rubber board with thickness over 20mm or corrugated rubber damping pad shall be applied between the unit and foundation 4 6 Outline...

Page 66: ...h the load bearing wall beam of building 5 2 Allowable length and fall for refrigerant pipe in IDU and ODU Model Pipe dimension mm Max pipe length m Max height difference between indoor unit and outdo...

Page 67: ...ighest point of the vertical pipe if ODU is above IDU then oil loop and check loop must be set separately at the lowest highest point 3 Manufacture size of oil loop is as follows A mm B mm C mm 19 34...

Page 68: ...gh the drain pipes and corrode the heat exchanger 6 2 Installing the Drain Pipes 1 Insert the drain hose into the drain outlet and tighten the clamp securely with tape 2 Tighten the clamp until the sc...

Page 69: ...ain pipe 9 The horizontal pipe cannot be connected to the vertical pipe at a same height It can be connected in a manner as shown below No 1 3 way connection of drainage pipe joint No 2 Connection of...

Page 70: ...cord and connecting wire with special flexible wire 6 The earthing shall be reliable and connected to the special earthing device on the construction The installation must be done by specialist techn...

Page 71: ...uction strictly Personnel of special type of work such as refrigeration worker electrician and welder must have the work permit for special type of work and they are not allowed to leave their post an...

Page 72: ...it design requirement Refer to the specification of ODU 8 For the vertical gas pipe is the oil loop installed every 10m For the vertical gas pipe one oil loop shall be installed every 10m from the top...

Page 73: ...etween power cable and TV shall be over 1m 21 Are there strong electromagnetic interference dust acid and alkaline gas around the unit No battery interference dust acid and alkaline gas around the uni...

Page 74: ...eration process Please refer to below run test for the refrigerant adding stage during run test process 7 After adding refrigerant please make sure the valve for outdoor is opened completely 8 For the...

Page 75: ...dule namely dial SA6 to 00 then set the other unit as subsidiary module namely dial the SA6 to 10 1 4 3 Basic operation of project debugging 1 Start project debugging Press SW3 button consecutively in...

Page 76: ...ng progress Debugging Code Instruction for Code and Operating Method Progress LED Display Code Display Code Start A0 Always ON No debugged yeat Press SW3 button consecutively in the master module for...

Page 77: ...heck and debug again to confirm 04 oC Display repeatedly The quantity of IDU in the system has been confirmed It will enter into the next step 05_ Detect ODU s internal communication 05 C2 Display rep...

Page 78: ...he waiting time to automatically enter the next step 08 oC Display repeatedly Sufficient preheating of compressor After displaying once circularly the system will enter the next step automatically 09_...

Page 79: ...its 03 quantity of modules in the system Display repeatedly Confirmation of quantity of modules in the system To differentiate from the debugging step the QTY of module will display only 1 digit on th...

Page 80: ...will display 09 and U6 repeatedly and the nixie tube of other modules will display 09 and J0 In canse malfunction occurd please check if the valve is opened and if the connection pipes among different...

Page 81: ...compulsory setting to unit operation mode after entering function setting A6 main board indicator of outdoor unit is displayed as follows LED Function code Display method nC nH nA nF Blink Select cor...

Page 82: ...and outdoor unit quantity shall be kept 3 Reset defaulted setting 3 clear function setting of outdoor unit only Long press SW3 SW4 for over 10s in the main module the nixie tube will display oC for 7...

Page 83: ...f compressor P4 Driven PFC protection of compressor P5 Overcurent protection for inverter compressor P6 Driven IPM module protection for compressor P7 Malfunction of driven temperature sensor for comp...

Page 84: ...ting for the maximum ouput capacity n6 Engineering series number inqury for indoor unit n7 Malfunction inquiry n8 Parameters inquiry nA Heat pump unit nH Heating only model nC Cooling only model nE Ne...

Page 85: ...for the fault It is a status code which means the system has entered cooling heating function setting status at this time choose cooling heating nA cooling only nC heating only nH and fan blow nF for...

Page 86: ...ng alarm for indoor unit filter is due the filter shall be cleaned and the period can be set according to actual operation circumstances Possible reason Troubleshooting Clean the filter and remove the...

Page 87: ...emergency operation Possible reason Troubleshooting 13 b1 malfunction of outdoor ambient temperature sensor Fault display the main board of outdoor unit and indoor unit will display Applicable model a...

Page 88: ...r is abnormal Yes Replace the temperature sensor Check if the circuit is abnormal Yes Replace the main control board 14 b2 malfunction of defrosting temperature sensor 1 Fault display the main board o...

Page 89: ...rmal Yes Replace the temperature sensor Check if the circuit is abnormal Yes Replace the main control board 15 b9 malfunction of gas exit temperature sensor for heat exchanger Fault display the main b...

Page 90: ...outdoor units Judgment condition and method for the fault The outdoor unit cannot detect the data of inverter compressor drive board in 30s then it will give alarm Possible reason 1 The communication...

Page 91: ...n of no main control unit Fault display the main board of outdoor unit and indoor unit will display Applicable model all outdoor units Judgment condition and method for the fault The main board will d...

Page 92: ...temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously report the error Possible reason 1 Poor con...

Page 93: ...DU displays Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds...

Page 94: ...r debugging status and the IDU cannot be operated Troubleshooting Possible reason 26 E1 high pressure protection Error display ODU mainboard IDU displays Applicable model all models Error judgment con...

Page 95: ...off valve of ODU completely Test if the high pressure switch is normal Replace the main board of ODU Replace the high pressure switch Yes No No No No No No No Yes No Yes Yes Yes Yes Yes Yes Yes No Is...

Page 96: ...s 94 2 Low pressure sensor is abnormal 3 Outdoor or indoor fan is abnormal 4 Filter screen of IDU or air duct is blocked cooling mode 5 Ambient operation temperature is too low 6 Insufficient refriger...

Page 97: ...DU and ODU operating normally Check if the swing plate of IDU is completely opened Does the DIP capacity of rated capacity of IDU exceed the allowed range Check if the operation of electronic expansio...

Page 98: ...e the coil or main board if it is normal please check the other items 3 Step 3 Restart the unit and observe if the fan of IDU ODU is operating normally if not please replace motor or main board 4 Step...

Page 99: ...roubleshooting 1 Replace the small CPU board 2 Replace the control board 3 Replace the control board 29 F5 malfunction of discharge temperature sensor for compressor 1 Error display the main board of...

Page 100: ...reign objects No Replace the temperature sensor 30 J7 air mixing protection for 4 way valve Error display the main board of outdoor unit and indoor unit will display Applicable model heat pump models...

Page 101: ...1MPa and touch the four pipes of the 4 way valve with hands to observe the cold heat status in cooling mode pipe E and S is in low temperature and low pressure status pipe D and C is in high pressure...

Page 102: ...l control 01 means energy conservation shall take preferential control at this time 15 of energy conservation can be achieved to the greatest extent Possible reason Troubleshooting 34 n4 limit setting...

Page 103: ...tered parameter inquiry status After entering this function the wired controller will display the engineering code of the IDU meanwhile the buzzer of the IDU will give out a sound Possible reason Trou...

Page 104: ...IDU can only conduct fan mode operation Possible cause Troubleshooting 43 P0 malfunction driven board for compressor Error display IDU wired controller displays Applicable model all models Condition...

Page 105: ...splay of dual 8 nixie tube of main control board of ODU According to the error code of main control board can estimate the the specific error of driven board of compressor and then conduct troubleshoo...

Page 106: ...for inverter compressor Error display ODU mainboard displays Applicable model all models Condition and method for fault judgement View the error code displayed in dual 8 nixie tube of main control bo...

Page 107: ...if the valves are open Yes Check if the control valve of system is in normal condition If the oil balancing valve works normally if the control terminals are well inserted etc If they are normal plea...

Page 108: ...ooting P7 malfunction of driven tempberature sensor of compressor Try to cut off the power for 3 times and then re energize the unit Compressor driven board is faulted No Replace the compressor driven...

Page 109: ...s Check if the screw are firmly fixed if the IPM module has been applied with radiating pasted No 50 P9 desynchronizing protection for inverter compressor Error display ODU mainboard displays Applicab...

Page 110: ...open No Check if the control valve of system is in normal condition If the oil balancing valve works normally if the control terminals are well inserted etc If they are normal please see the next step...

Page 111: ...ver 460V if yes the protection occurs Possible causes 1 Voltage of input power cord is over 460V 2 Driven board of compressor is faulted Troubleshooting PH high voltage protection for driven DC bus ba...

Page 112: ...r Yes Adjust the voltage as Rated voltage 54 PJ failure startup for inverter compressor Error display ODU mainboard displays Applicable model all models Condition and method for fault judgement View t...

Page 113: ...valves are open Yes Check if the control valve of system is in normal condition If the oil balancing valve works normally if the control terminals are well inserted etc If they are normal please see...

Page 114: ...d jumper cap of mainboard are in consistent with that of the actual unit No Replace the main control board No After cutting off the power supply redial the code or replace the correct jumper cap and t...

Page 115: ...emperature of IDU coil is 5 C or above over than tube inlet temperature 2 When IDU operates under heating mode and the electronic expansion valve opens to 480PLS tube inlet temperature of IDU coil is...

Page 116: ...ode check if the indoor ambient temperature is over 32 if it is over 32 within 1 hour after being started it is a normal phenomena if it s over 32 for over 1 hour after being started it may be caused...

Page 117: ...lit Air conditioner Inverter Series 115 3 Wiring Diagram Advertence These diagrams only for reference the actually diagram please reference the diagram on actually unit FGR20Pd DNa X I FGR25Pd DNa X I...

Page 118: ...GREE Duct type split Air conditioner Inverter Series 116 FGR40Pd D 2 Na X I FGR20Pd DNa X O...

Page 119: ...GREE Duct type split Air conditioner Inverter Series 117 FGR25Pd DNa X O FGR30Pd DNa X O...

Page 120: ...emove the compressor from the chassis Unscrew retaining nuts of the footing of compressor Remove the compressor from the chassis Hold it tightly to avoid accident 4 Fix the new compressor on chassis P...

Page 121: ...ng welding 2 Disconnect the pipe site D in illustration of 4 way valve and discharge pipe Don t leave welding slag inside pipes 3 Disconnect the pipe site E in illustration of 4 way valve and connecti...

Page 122: ...Pipe 76712454 76712454 76712454 2 6 Top Cover Board Sub assy 01265359 01264100090 017011000037 1 7 Hook 02112466 02112466 02112466 4 8 Electric Box Assy 100002002010 100002002010 100002002010 1 9 Radi...

Page 123: ...Code CF010N0730 CF010N0740 CF010N0750 Part Name Part Code Part Code Part Code 19 Motor for Centrifugal Fan Right Type 15705307 1570411801 10300400004701 1 20 Brushless DC Motor 15704100009 15704100009...

Page 124: ...Assy 007070000002 1 8 Strainer 07210037 1 9 Main Board 300002000357 1 10 Terminal Board 420001000004 1 11 Terminal Board 4201800002601 1 12 Main Board 300002000380 1 13 Radiator 49018000013 1 14 Reac...

Page 125: ...4100015 01514100023 1 4 Left Side Plate 01314100084P 01314100090P 1 5 Handle 26235253 1 6 Front Side Plate 01314100082P 01314100091P 1 7 Axial Flow Fan 10434100006 10434100008 2 8 Compressor and Fitti...

Page 126: ...g 4304413219 4304413205 1 25 Gas liquid Separator 07424140 07424141 1 26 Rear Side Plate 01314100083P 01314100092P 1 27 Rear Grill 01574100011 01574100014 1 28 Strainer 07212403 07212121 1 29 Condense...

Page 127: ...e 1 Front Grill 01572800003 2 2 Diversion Circle 10474100003 2 3 Cabinet 01514100016P 1 4 Front Side Plate 01314100091P 1 5 Handle 26235253 2 6 Axial Flow Fan 10434100008 2 7 Brushless DC Motor 157041...

Page 128: ...2 Electronic Expansion Valve 43044100190 1 23 Reactor 4313017401 1 24 Terminal board 42011221 1 25 Terminal board 420001000019 1 26 Main Board 30223000039 1 27 Electric Box Assy 100002001274 1 28 Radi...

Page 129: ...JF00303352 JF00304016...

Search results

Summary of Contents for CF01000730

Reviews:

Related manuals for CF01000730

Brands by name

Popular brands

Gree CF01000730, Service Manual

Search results

Summary of Contents for CF01000730

Reviews:

Related manuals for CF01000730

Brands by name

Popular brands